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Summit Park I

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Sandler Southwest Corp.


McKinney, TX






91,000 sq. ft.

Summit Park I

Summit Park I is a 91,000 square foot, Class A office building in McKinney, situated on narrow sliver of land encircled by trees, walking trails, and a golf course and lake. O’Brien was challenged to design a building that would fit on the parcel, while blending unobtrusively into the serene setting and meeting code requirements. Our solution included concealing a level of parking beneath the building, making good use of the site’s steep grading. Stone pillars and iron work give the building a grounded feeling and connect it to the natural surroundings.

Client Testimonials

  • charlotte jones anderson - dallas cowboys

    Charlotte Jones Anderson

    Dallas Cowboys
    "O'Brien is about incredible architecture. They are an amazing team who works tirelessly, who burn the midnight oil. You talk about people with passion, they are a passionate team. O'Brien has lead us on an epic path of greatness. We are excited to continue with our partnership with Sean and his team."
  • shawn fulham - lincoln property company

    Shawn Fulham

    Lincoln Property Company
    "O'Brien has been a truly invaluable partner for Lincoln Property Company over the last 30 years. They have a comprehensive understanding of master planning, mixed use, and all the individual uses and components that make complex projects successful from both a design and financial standpoint. They have a long history of success, and always continue to stay on the cutting edge of design and development."
  • Lucy Billingsley, Billingsley Company

    Lucy Billingsley

    Billingsley Company
    "Sean O’Brien and team have the creativity, alacrity and flexibility to be great design partners. They listen closely and then bring all the historical architectural smarts and a fresh eye to creating places where you’d like to be. They first think through making the public realm inviting and then enrich that with great architecture."
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